A function f is given by the table. Find .
A) 3
B) -1
C) 4
D) -4
E) 0

Question

A function f is given by the table. Find . 
A) 3 
B) -1 
C) 4 
D) -4 
E) 0

Quizplus · Accepted Answer

Looking at the table, we can see that the input values are increasing by 1 each time, while the output values are decreasing by 2 each time. Therefore, to find the value of f(8), we can start with the value of f(5) and subtract 2 for each additional input value beyond 5.

f(5) = 1
f(6) = -1 (subtract 2)
f(7) = -3 (subtract 2 again)
f(8) = -5 (subtract 2 again)

Therefore, f(8) = -5, which is answer choice B).

A Function F Is Given by the Table